Remember seeing this when I was 10 years old Have seen many episodes of the original Twilight Zone. I just had it on and in the first few seconds and realized this is one of two episodes I remembered so well when I was a kid. The first one which I have seen many times, was the aliens came to earth and provided cures to cancer among other things and improved the population of the earth by eliminating all illnesses. They could not translate the book the aliens had given the world leaders. One scientist finally decided to take them up on their offer to go to their planet. As he is boarding the ship, a co-worker tells him the book is a cookbook "To Serve Man!" The Invaders episode with Agnes Moorehead had a similar plot twist at the end. So glad I had the channel on tonight so I could finally view this terrific episode for a second time. It was as scary as I remember.